
public class MainClass
{

//public static void doHomework(Learnable learnable)
//{
//    learnable.read();
//}

    public static void main(String[] args) {
        Person person;
        person=new Person();
        person.read();


//        person=new Teacher();
//        person.read();
//
//        doHomework(new Student());
    }
}
